公开(公告)号：US3996117A

公开(公告)日：1976-12-07

申请号：US455374

申请日：1974-03-27

申请人： Robert W. Graham ,  Stanley C. Jacobs ,  Henry G. Wickes, Jr. ,  Alfred F. LaCamera

发明人： Robert W. Graham ,  Stanley C. Jacobs ,  Henry G. Wickes, Jr. ,  Alfred F. LaCamera

IPC分类号： C25C3/18 ,  C25C3/06

CPC分类号： C25C3/18

摘要： In a process for producing aluminum, which process conventionally includes electrolytically decomposing alumina to aluminum metal in a molten electrolyte bath between a carbon anode and a cathodic interface formed between a molten aluminum metal pad and sides electrolyte bath, the bathA. being predominantly NaF and AlF.sub.3,b. containing CaF.sub.2 and Al.sub.2 O.sub.3, andC. being covered by a frozen crust,The improvement including providing in the bath 5 to 10 weight-% LiF, while maintaining in the bath a weight ratio NaF to AlF.sub.3 of 1.04 to 1.15, and while maintaining a frozen layer bounding the sizes of the aluminum metal pad and bath.

摘要翻译： 在一种生产铝的方法中，该方法通常包括在形成在熔融铝金属垫和侧面电解液浴之间的碳阳极和阴极界面之间的熔融电解液浴中将铝氧化物电解分解成铝。浴A具有预制的NaF和 AlF3，b。 包含CaF 2和Al 2 O 3以及C.由FROZEN CRUST覆盖的改进，包括在5至10重量％LiF中提供的改进，同时保持浴中NaF至AlF 3的重量比为1.04至1.15，同时保持 包围铝金属垫和浴的尺寸的冻结层。